Tether, on Optimism

USDT0 on Optimism is the USDT0 representation of USDT within the USDT0 Network. It keeps one unified USDT across supported chains instead of a separate bridged version with isolated liquidity. For users on Optimism, USDT0 works as the USDT asset available through the USDT0 system.

Transfers to and from Optimism are secured by LayerZero, the interoperability protocol behind USDT0, and by the USDT0 Attestation System. The Attestation System verifies every transfer through independent attestation before it finalizes. Each message needs sign-off from the Core Attestation Set, a 3-of-3 signer group of USDT0, LayerZero, and Canary. No single verifier can approve a transfer on its own. USDT0 moves with a burn-and-mint model and 1:1 backing: no wrapped tokens, no external bridges.

Moving USDT0 between Optimism and any other USDT0 Network chain has no protocol fee (0 bps). You only pay network gas on the source and destination chains. When the other side is a Legacy Mesh chain (native USDT on Solana, TON, Tron, and Celo), the transfer routes through the Legacy Mesh and costs 0.03% (3 bps), paid in USDT.

The Optimism USDT contract address is 0x01bFF41798a0BcF287b996046Ca68b395DbC1071. This is the contract for the token you receive when you bridge USDT to Optimism through USDT0. Double-check the full address before sending funds.

On Optimism, the USDT0 transfer widget supports MetaMask, Rabby, and other EVM browser wallets, Coinbase Smart Wallet, or any wallet connected through WalletConnect. Add the Optimism network in your wallet, then import the contract address above if your balance does not appear automatically.